CN103620824B - The manufacture method of electrical storage device and electrical storage device - Google Patents
The manufacture method of electrical storage device and electrical storage device Download PDFInfo
- Publication number
- CN103620824B CN103620824B CN201280031675.1A CN201280031675A CN103620824B CN 103620824 B CN103620824 B CN 103620824B CN 201280031675 A CN201280031675 A CN 201280031675A CN 103620824 B CN103620824 B CN 103620824B
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- collector plate
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- positive electrode
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- negative side
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/0029—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/182—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells with a collector centrally disposed in the active mass, e.g. Leclanché cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K15/00—Electron-beam welding or cutting
- B23K15/0046—Welding
- B23K15/008—Spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/22—Spot welding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/66—Current collectors
- H01G11/70—Current collectors characterised by their structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/154—Lid or cover comprising an axial bore for receiving a central current collector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/179—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/562—Terminals characterised by the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/38—Conductors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
Landscapes
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Plasma & Fusion (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
By possessing with lower component, realize the low resistance of electrical storage device, connecting structure it is fastness, and realize connecting the simplification of operation：Make the electrode body of side of the positive electrode（Collector 120）With the electrode body of negative side（Collector 140）Across separator（56、58）Relative charge storage element（Cell device 4）；The sealing part of the housing parts sealing of charge storage element will be housed（Hush panel 18）；Electrode body is set to protrude from the single or multiple electrode projections of the element end face of charge storage element（Positive pole portion 12, negative pole portion 14）；The single or multiple collector plates being connected with electrode projection（32、34）；And it is arranged at sealing part and the terminal component being connected with collector plate between side（Positive terminal 28, negative terminal 30, connecting plate 72,74）.
Description
Technical field
Formation and interconnection technique the present invention relates to charge storage element and terminal component.
Background technology
For example in the exploitation of the practical and new portable equipment etc. of electric automobile, the strong storage for expecting high-energy-density
Electrical part.In this electrical storage device, the electrical connection of charge storage element and outside terminal to the reduction of the internal resistance of component side and
The contact resistance of coupling part produces influence, therefore implements reduction countermeasure.
On this electrical connection, it is known to following technology（Such as patent document 1）：In the end face of element, current collection end is set
Son, sets positive pole current collections plate, another end face and sets negative electrode collector plate in an end face of winding element, to be covered in winding unit
The mode of the collector foil that the end face of part exposes has collector plate, and carries out laser welding connection to collector plate and collector foil.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2003-263977 publications
The content of the invention
Invent problem to be solved
However, for example entering to element in the element end face of the charge storage elements such as battery device is equipped with the structure of collector
In the package parts of row encapsulation in the case of the adjacent outside terminal for being equipped with side of the positive electrode and negative side, it is necessary to each outside terminal with
Ensure to connect distance between collector.Additionally, in convoluted element, due to the inboard portion for being distributed in element of internal resistance
It is different between Outboard Sections, it is therefore desirable to which that its countermeasure with the connection of collector to element, it is necessary to be noted that.Additionally, making
The internal resistance of element can be reduced with the construction of collector, but outside terminal is folded in due to being applied on the way in the mill
The stress of the collector between element, and there is reliability reduction and the big situation of connection resistance change of connection.
Therefore, it is an object of the invention in view of above-mentioned problem, realize the low resistance of charge storage element, connecting structure
It is fastness, and realize connecting the simplification of operation.
Means for solving the problems
In order to achieve the above object, electrical storage device of the invention possesses：Charge storage element, it makes the electrode body of side of the positive electrode and bears
The electrode body of pole side is relative across separator；Sealing part, the housing parts sealing that it will contain the charge storage element；It is single
Or multiple electrodes protuberance, it is the electrode body is protruded from the element end face of the charge storage element and is formed；It is single or
Multiple collector plates, it is connected with the electrode projection；And terminal component, it is arranged at the sealing part, in side
Between be connected with the collector plate.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that can be in the same of the charge storage element
Possess the electrode projection of side of the positive electrode and the electrode projection of negative side on element end face.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that the collector plate and the terminal component
It is hermetically laser welded or electron beam welding.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that the electrode projection can be by setting
Put fold line and bent on the element end face.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that the terminal component can be included and institute
The connecting plate stated the outside terminal of collector plate connection and be arranged between the outside terminal and the collector plate.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that can be described in the charge storage element
The 1st insulation is set between the electrode projection of the side of the positive electrode and the electrode projection of the negative side of element end face protrusion
Interval, on the electrode projection of the side of the positive electrode of the charge storage element set side of the positive electrode collector plate with the negative pole
The 2nd insulation gap is set between the collector plate of the negative side set on the electrode projection of side.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that the collector plate can have with it is described
The join domain of terminal component connection and the join domain being connected with the electrode projection, these join domains are set at
Different positions.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that the collector plate and the terminal component
Can possess the connection face of the arc surface being set as on the basis of the element central of the charge storage element.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that the collector plate can have heavy wall
Portion, the thermal capacitance that making the collector plate using the heavy section has increases.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that the welding based on laser beam or electron beam
Portion can stagger relative to the collector plate with the contact surface of the terminal component.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that can be by being formed on the current collection
The covering part of plate or the terminal component covers the contact surface of the collector plate and the terminal component, in the covering part
Possesses the weld part being welded to the collector plate and the terminal component by the irradiation of laser beam or electron beam.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that the laser beam or the electron beam
The irradiation position can be consistent with the contact surface of the collector plate and the terminal component, or intersects with the contact surface
Direction on it is different from the contact surface.
In order to achieve the above object, in above-mentioned electrical storage device, it is further preferred that the laser welding or the electron beam
The nugget depth of welding can be for 1.2 [mm] below.
Additionally, in order to achieve the above object, the manufacture method of electrical storage device of the invention includes following operation：Formation possesses
Across the positive polar body and the charge storage element of negative electrode of separator；Formation makes the described of the side of the positive electrode of the charge storage element and negative side
Any one party or two sides in electrode body protrude from the single or multiple electrode projections of element end face；And across current collection
Plate connects the electrode projection and is arranged at the terminal component of sealing part, and the sealing part will house the electric power storage unit
The housing parts sealing of part.
In order to achieve the above object, in the manufacture method of above-mentioned electrical storage device, it is further preferred that following work can be included
Sequence：The electrode projection and the collector plate are connected by welding between side；And by laser welding or electron beam
Weld to connect the collector plate and the terminal component.
In order to achieve the above object, in the manufacture method of above-mentioned electrical storage device, it is further preferred that following work can be included
Sequence：The fixation collector plate, and be pressed into the state of the collector plate by the charge storage element, by laser welding
To connect the collector plate and the electrode projection.
In order to achieve the above object, in the manufacture method of above-mentioned electrical storage device, it is further preferred that following work can be included
Sequence：Sealing wire is set in the upper surface of the collector plate, laser irradiation is carried out at the sealing wire, to the collector plate and described
The electrode projection of charge storage element is welded.
In order to achieve the above object, in the manufacture method of above-mentioned electrical storage device, it is further preferred that following work can be included
Sequence：Change is irradiated to the laser output being set on the sealing wire of the collector plate.
In order to achieve the above object, in the manufacture method of above-mentioned electrical storage device, it is further preferred that can by laser beam or
The irradiation position of electron beam is set as the positions different from the contact surface of the collector plate and the terminal component, to irradiation position
Put irradiation laser beam or electron beam.
The effect of invention
Electrical storage device of the invention or its manufacture method, can obtain any one following effect.
（1）The electrode projection protruded in the element end face of the charge storage element comprising battery device and the interval of terminal component
Collector plate to be connected, therefore, it is possible to realize the low resistance of charge storage element.
（2）Terminal component weight by the collector plate being connected with single or multiple electrodes protuberance and on package parts
It is folded, it is welded to connect between side surface part, wherein, described single or multiple electrodes protuberance is to make the positive pole of charge storage element
Any one party or both sides in the electrode body of side or negative side protrude from element end face, therefore, it is possible to cause to use
It is narrow and small in the spatial portion of connection, while enhancing connection, the reliability of connection is improve, and the low of charge storage element can be realized
Resistance, can realize low ESRization.
（3）It is independently possess current collection between the electrode projection and terminal component of the element end face protrusion of charge storage element
The connecting structure of plate, therefore, it is possible to make terminal component fastness with the connecting structure of electrode projection or charge storage element.
（4）According to above-mentioned construction, the connection of terminal component and electrode projection can be simplified across collector plate, can realized
Connect the simplification of operation.
（5）By laser beam or electron beam irradiation to the position different from the contact surface of collector plate and terminal component, therefore
Independently both can be welded with the state of collector plate and the contact surface of terminal component.
（6）The collector plate of covering collector plate or terminal component or collector plate and the contact surface of terminal component can be selected
The tabular surface of side irradiates laser beam or electron beam, even if therefore in collector plate and the machining accuracy of the contact surface of terminal component
In the case of low, even and if there is gap, it is also possible to obtain optimal welding scope, improve between collector plate and terminal component
Welding precision and weld strength.
（7）Contact of the collector plate with terminal component is covered by the covering part on collector plate or terminal component
Face, and laser beam or electron beam are irradiated to the covering part, therefore, it is possible to the shape with collector plate and the contact surface of terminal component
State independently welds both.
Also, by referring to accompanying drawing and each implementation method, other objects of the present invention, feature and advantage become brighter
Really.
Brief description of the drawings
Fig. 1 is a longitudinal section for example of the battery for showing the 1st implementation method.
Fig. 2 is the exploded perspective view for showing battery.
Fig. 3 is a flow chart for example for showing battery manufacture operation.
Fig. 4 is the stereogram for decomposing the part for showing cell device.
Fig. 5 is the figure of the element end face for showing cell device.
Fig. 6 is the stereogram of the element end face and collector plate for showing cell device.
Fig. 7 is a figure for example of the connection treatment for showing cell device and collector plate.
Fig. 8 is a figure for example of the connection treatment for showing outside terminal and collector plate.
Fig. 9 is the figure of the connection status for showing collector plate and outside terminal.
Figure 10 is the exploded perspective view of the battery for showing the 2nd implementation method.
Figure 11 is the figure for showing to possess the connecting structure of connecting plate.
Figure 12 is the stereogram of the electrode portion before and after showing the collector plate of the 3rd implementation method and being molded.
Figure 13 is the exploded perspective view of the battery for showing the 4th implementation method.
Figure 14 is a figure for example for showing the collector for forming cell device and electrode portion.
Figure 15 is to decompose the stereogram for showing cell device.
Figure 16 is a stereogram for example for showing the electrode portion before and after shaping.
Figure 17 is an amplification sectional view for example for showing the electrode portion before and after shaping.
Figure 18 is the figure of the plane and side for showing collector plate.
Figure 19 is a figure for example of the sealing wire for showing collector plate.
Figure 20 is the figure for showing outside terminal and collector plate before and after welding.
Figure 21 is a figure for example of the laser output control for showing the 5th implementation method.
Figure 22 is the figure of the variation for showing laser output control.
Figure 23 is a figure for example of the fixture construction of the collector plate and cell device for showing the 6th implementation method.
Figure 24 is a figure for example of the holding and the connection treatment that show collector plate and cell device.
Figure 25 is an amplification sectional view for example of the electrode portion for showing collector plate and cell device.
Figure 26 is a stereogram for example of the collector plate and cell device for showing the 7th implementation method.
Figure 27 is a stereogram for example for showing the laser welding between outside terminal and collector plate.
Figure 28 is a figure for example for showing laser irradiation.
Figure 29 is the figure of the welding portion of the positive pole current collections plate and positive terminal that enlargedly show the 9th implementation method.
Figure 30 is the figure of the welding form for showing laser beam.
Figure 31 is the figure for showing the nugget by heat conduction weld formation.
Figure 32 is the figure of the welding portion of the positive pole current collections plate and positive terminal that enlargedly show the 10th implementation method.
Figure 33 is the figure for showing the nugget by heat conduction weld formation.
Figure 34 is the figure for showing other nuggets by heat conduction weld formation.
Specific embodiment
[the 1st implementation method]
1st implementation method includes following structure, and the structure possesses electrode projection in the element end face of battery, via current collection
Plate connects the electrode projection and terminal component.
Battery on the 1st implementation method, reference picture 1.Fig. 1 shows a longitudinal section for example of battery.Shown in Fig. 1
Structure be an example, the present invention do not limited by said structure.
The battery 2 is an example of battery of the invention and its manufacture method.Electrical storage device comprising such as lead battery,
The high capacitance product of Ni-Cd batteries, Ni-MH batteries, the capacitor of bulky capacitor and lithium battery etc..The lithium battery is for example just
The transition metal oxides such as manganese dioxide, lithium manganese spinel, lithium and cobalt oxides, lithium nickel oxide are employed in the active material of pole,
Or thionyl chloride, SO2Sulfides, employ the carbon that lithium is released in lithium metal, lithium alloy or absorption in negative electrode active material
Material.Additionally, comprising such as lithium-ion capacitor etc. in the capacitor of bulky capacitor.Lithium-ion capacitor is used for example comprising lithium
Salt as the non-aqueous electrolyte of electrolyte electrical storage device（Nonaqueous lithium-type storage device）.The lithium-ion capacitor is to use
One example of the electrical storage device of the electrode body of the electrode body and negative pole of positive pole, wherein, the electrode body of the positive pole is by activity
The current collection of the electrode layer and metal foil of the Composite of charcoal monomer or activated carbon and the transition metal oxide containing lithium etc. etc.
Body is constituted, and the electrode body of the negative pole is by can reversibly adsorb, release the titanyl such as carbon material or lithium titanate of lithium ion
The collector of the electrode layer and metal foil of thing composition etc. is constituted.The capacitor of the bulky capacitor has been used using activity with the two poles of the earth
The double charge layer capacitor of the polarizability electrode of charcoal is compared, and can expect bulky capacitor.
Battery 2 shown in Fig. 1 is an example of electrical storage device, is employed as the cell device 4 of winding element, the electricity
Pond element 4 is an example of the charge storage element of electrical storage device, for example, kept and be received in encapsulating housing 8 by retainer belt 6.
Retainer belt 6 prevent backward-coiled as the cell device 4 of winding element around.It is formed with the element end face 10 of the cell device 4
Positive pole portion 12, negative pole portion 14, insulation gap 16 is provided between these positive pole portions 12 and negative pole portion 14.Positive pole portion 12 and negative pole
Portion 14 is formed at an example of the electrode projection of public element end face 10.Additionally, the insulation gap 16 is to be set
In an example for protruding from the 1st insulation gap between the positive pole portion 12 of element end face of cell device 4 and negative pole portion 14.Envelope
Dress housing 8 is that have bottom cylinder, its opening portion 17（Fig. 2）Sealed by hush panel 18.The hush panel 18 is as hush panel main body
The upper surface side edge of base portion 20 possesses sealing 22.Base portion 20 is by for example as the insulative synthetic resin of insulating materials
Formed.Sealing 22 is formed by the part of such as rubber ring, and the part is made up of seal material high.Processed by crimping
The open end 26 of encapsulating housing 8 is set to be trapped in the sealing 22 of the hush panel 18 for being located in ca(u)lk end difference 24, it is thus right
Encapsulating housing 8 has carried out secure seal.
Possess positive terminal 28 and negative terminal 30 through base portion 20 as terminal component in hush panel 18.Positive terminal
Son 28 and negative terminal 30 are fixed to base portion 20, and are insulated by base portion 20.In positive terminal 28 and battery unit
The collector plate 32 of side of the positive electrode is provided between the positive pole portion 12 of part 4, between negative terminal 30 and the negative pole portion 14 of cell device 4
It is provided with the collector plate 34 of negative side.Insulation gap 36 is provided between collector plate 32,34.The insulation gap 36 is to be set
One example of the 2nd insulation gap between the collector plate 32 of the side of the positive electrode of cell device 4 and the collector plate 34 of negative side.And
And, collector plate 32 is connected with positive pole portion 12, and collector plate 32 is connected with positive terminal 28 by the welded connection 38 of side.
Such as laser welding or electron beam welding are employed in the connection of collector plate 32 and positive terminal 28.Equally, collector plate 34 leads to
Cross welding to be connected with negative pole portion 14, and be connected with negative terminal 30 by welding.That is, the positive pole portion 12 of cell device 4 via
Collector plate 32 and be connected with positive terminal 28, and cell device 4 negative pole portion 14 via collector plate 34 with negative terminal 30
Connection.
Cell device 4 is fixed to hush panel 18, and is received in encapsulating housing 8, is maintained at hush panel 18 with envelope
Between the bottom surface of dress housing 8, so as to be fixed in encapsulating housing 8.
Then, on each several part of the battery 2, reference picture 2.Fig. 2 shows an example of the battery after decomposing.Fig. 2
Shown structure is an example, and the present invention is not limited by said structure.Pair label identical with Fig. 1 identicals part mark.
Carry out decile for example every 60 [degree] in the positive pole portion 12 and negative pole portion 14 of cell device 4, enter towards element central 40
Row is folded, and is compressed into type.By the compression forming, formed with element central 40 in each positive pole portion 12 and each negative pole portion 14
Centered on radial convex strip portions 42.
Collector plate 32,34 is substantially semicircle shape, and is formed with the notch 44 with the corresponding semicircle shape of element central 40, from
The notch 44 is radially formed with recess 46 towards peripheral part, used as the one of the resettlement section for housing already described convex strip portions 42
Individual example.
Possesses terminal connection part 48 on collector plate 32,34 as first be connected with positive terminal 28 or negative terminal 30
Join domain, and at the position different from terminal connection part 48, be formed with element connecting portion 50 as with positive pole portion 12 or
Second join domain of the connection of negative pole portion 14.In terminal connection part 48, it is formed with the side of collector plate 32,34 already described
Welded connection 38 by collector plate 32,34 sides the 1st welding face 52.
Also, in the positive terminal 28 in hush panel 18, already described welding company is formed with the side of negative terminal 30
The 2nd welding face 54 by terminals side of socket part 38.Welding face 52,54 constitutes common face, in the present embodiment example
As being equal with the distance between element central 40, and constitute tabular surface.
Then, on the manufacture method of the battery 2, reference picture 3.Fig. 3 shows an example of the manufacturing process of battery.
Manufacturing process shown in Fig. 3 is an example of the manufacture method of electrical storage device of the invention.In the manufacturing process
In, cell device 4 is for example formed as charge storage element（Step S11）, positive pole portion 12 and negative pole portion 14 to cell device 4 are carried out
Shaping（Step S12）, carry out the connection of positive pole portion 12 and collector plate 32, negative pole portion 14 and collector plate 34（Step S13）, collector plate
32 and positive terminal 28 connection, collector plate 34 and negative terminal 30 connection（Step S14）, will be formed by these steps
Cell device 4 be received into encapsulating housing 8, and encapsulating housing 8 is sealed（Step S15）.
[the formation of cell device（Step S11）]
On cell device 4, reference picture 4.Fig. 4 shows the configuration example of the cell device after decomposing a part.Shown in Fig. 4
Structure be an example, the present invention do not limited by said structure.
Cell device 4 shown in Fig. 4 is made up of winding element, is had：The collector 120 of such as side of the positive electrode is used as positive pole
Body；The collector 140 of such as negative side is used as negative electrode；With separator 56,58.Electronic component 4 is by by separator 56,58
It is clamped between each collector 120,140 and forms cylindric winding element.The base material of each collector 120,140 is using electricity
Pole material, the carbon material of lithium is released in the two-sided formation such as anode electrode body comprising lithium titanate of collector and comprising absorption
Negative electricity polar body.
In the cell device 4, shape between the positive pole portion 12 of the side of identical element end face 10 and negative pole portion 14 is being formed at
Into the insulation gap 16 for having fixed width, positive pole portion 12 and negative pole portion 14 are formed by the base material of each collector, do not form electrode body.
The width W that the forming portion in positive pole portion 12 or negative pole portion 14 is set to be used for the separator 56,58 of insulating unit is big, is formed as
Length L corresponding with the arc length in each positive pole portion 12 or each negative pole portion 14.In each positive pole portion 12 and each negative pole portion 14, with unit
Part end face 10 is formed parallel to for folding into the fold line 60 on element end face 10.
[the shaping in positive pole portion and negative pole portion（Step S12）]
Shaping on positive pole portion 12 and negative pole portion 14, reference picture 5.Fig. 5 shows the element end face of cell device.
As shown in figure 5, the positive pole portion 12 and negative pole portion 14 before shaping are the collection of the protrusion of element end face 10 in cell device 4
The column of electric body 120,140, each collector is divided using the separator bar 62 every such as θ=60 [degree] as constant angle θ
120、140.Thus, by collector 120 be set to division 12A, 12B, 12C, collector 140 be set to division 14A, 14B,
14C。
For the cell device 4, division 12A from the central portion in division 12A, 12B, 12C, 14A, 14B, 14C,
The periphery of 14A pushes over division 12A, 14A towards the actuating pressure F1 of element central 40, and in the side vertical with element end face 10
It is compressed shaping upwards.After the forming processes, to remaining division 12B, 12C, 14B, 14C, from its periphery direction unit
The actuating pressure F2 of part center 40 pushes over division 12B, 12C, 14B, 14C, and enterprising in the direction vertical with element end face 10
Row compression forming.Thus, in division 12A and the intersection of division 12B, 12C, it is in the part of the overlap of collector 120
Radially it is formed with the convex strip portions 42 extended towards the periphery of cell device 4 from element central 40（Fig. 2）.Equally in division
14A is also radially formed with convex strip portions 42 with the intersection of division 14B, 14C（Fig. 2）.
By the forming processes, positive pole portion 12 and negative pole portion 14, positive pole are formed with the element end face 10 of cell device 4
Portion 12 and negative pole portion 14 turn into the form after multiple subregions of convex strip portions 42.
In the compression forming in positive pole portion 12 and negative pole portion 14, when shaping is compressed towards element central 40, to height
Degree size is adjusted.In this place manage in, such as at the separator bar 62 in positive pole portion 12 and negative pole portion 14 add otch, by
After shaping is compressed to division 12A, 14A, shaping is compressed successively to both sides surface side, adjustment is by overlapping the line for producing
The height dimension of the convex strip portions 42 of shape.
[the connection of positive pole portion or negative pole portion and collector plate（Step S13）]
Connection on positive pole portion 12 or negative pole portion 14 and collector plate, reference picture 6.Fig. 6 shows the element of cell device
End face and collector plate.
As shown in fig. 6, collector plate 32,34 is same shape, and be formed as the element end face by charge storage element is constituted
10 points of element end face is semi-circular shape obtained from two parts.In the lower face side of each collector plate 32,34, radially formed
There is the recess 46 of the convex strip portions 42 for housing already described.The convex of the element end face 10 in cell device 4 is accommodated with each recess 46
Bar portion 42, thus each collector plate 32,34 can be compressed to it is flat so as to planarization positive pole portion 12 and the water of negative pole portion 14
It is flat, i.e., it is parallel with element end face 10 and be configured in the state of being close to.
In the upper surface of each collector plate 32,34, terminal connection part 48 is set with the region clipped by each recess 46,
The lower surface of each collector plate 32,34, is set with element connecting portion 50 in the region between recess 46 and edge.In collector plate 32
Terminal connection part 48 on be connected with positive terminal 28（Fig. 2）, negative pole end is connected with the terminal connection part 48 of collector plate 34
Son 30（Fig. 2）.Additionally, division 12B, 12C in already described positive pole portion 12 is connected with the element connecting portion 50 of collector plate 32,
Division 14B, 14C in already described negative pole portion 14 is connected with the element connecting portion 50 of collector plate 34.
Connection on the positive pole portion 12 or negative pole portion 14 and collector plate, reference picture 7.Fig. 7 shows and is provided with collector plate
Cell device.
As shown in fig. 7, collector plate 32,34 receives positive pole portion 12, the convex strip portions 42 of the side of negative pole portion 14 in recess 46.In collection
In the setting of electroplax 32,34, collector plate 32,34 is configured in positive pole portion 12, negative pole portion 14, and collector plate 32,34 is pressed into
Element end face 10.Each collector plate 32,34 receives each convex shaped part 42 in recess 46, and flatly compression generation positive pole portion 12,
Negative pole portion 14, therefore, it is possible to make element connecting portion 50 be close to positive pole portion 12 or negative pole portion 14.
The state is maintained, the element connecting portion 50 from such as laser irradiation device 64 to collector plate 32,34 carries out laser photograph
66 are penetrated, positive pole portion 12 is melted and is connected with the element connecting portion 50 of collector plate 32, and melt negative pole portion 14 and and collector plate
34 element connecting portion 50 is connected.For the position between the element connecting portion 50 of laser irradiation device 64 and collector plate 32,34
Relation, can irradiate 66, it is also possible to which scanning possesses the cell device 4 of collector plate 32,34 with the laser of scanning laser irradiation unit 64.
Also, in laser irradiation 66, laser irradiating part position 68 is set in the element connecting portion 50 of collector plate 32,34 and is made
It is an example of sealing wire, each irradiated site 68 is set to what is extended towards the periphery of collector plate 32,34 from element central 40
Linearly.Laser irradiating part position 68 in present embodiment is the element of two sides separated with recess 46 of collector plate 32,34
Each two positions of connecting portion 50.
Laser irradiate 66 from the direction towards Fig. 7 of arrow [I], [II], [III] and [IV] shown in irradiated site 68 according to
The order of [I], [II], [III] and [IV] is carried out.
In the irradiated site 68 of arrow [I] is labelled with, the outer circumferential side from cell device 4 is linear towards element central 40
Laser irradiation 66 is carried out to a collector plate 34 shape.
In the irradiated site 68 of arrow [II] is labelled with, to across element central 40 and another opposed collector plate 32
Outer circumferential side towards cell device 4 from the side of element central 40 carries out laser irradiation 66.
Additionally, in the irradiated site 68 of arrow [III] is labelled with, from the outer circumferential side of cell device 4 towards element central
40 linearly carry out laser irradiation 66 to a collector plate 34.
In the irradiated site 68 of arrow [IV] is labelled with, to across element central 40 and another opposed collector plate 32
Outer circumferential side towards cell device 4 from the side of element central 40 linearly carries out laser irradiation 66.
So, a series for the treatment of that laser irradiates 66 is linearly carried out by across element central 40, using sharp
The melting of light irradiation 66 connects the element connecting portion 50 of positive pole portion 12 and collector plate 32, negative pole portion 14 and the element of collector plate 34
Socket part 50 is coupled together.
Furthermore it is possible to the series of actions of [I] and [II] that laser is irradiated is repeated twice or laser irradiates [I]
Series of actions to [IV] is repeated twice, and as an example of multiple sealing wires, can set laser irradiating part position 68
It is parallel two lines.If so making laser irradiate 66 multiplexes, connection resistance can be further reduced.Laser irradiation 66
Scanning direction can be the scanning of already described [I] and [II] but it is also possible to be from the side of element central 40 towards element outer circumferential side
Direction.Furthermore, it is possible to be continuous scanning unlike already described [I] and [II], but individually scanning.
Additionally, on laser irradiation 66, the scanning of [I] to [IV] can not be and continuously carry out laser photograph to same position
Penetrate, but proceed to [IV] from [I], then again from [I] scanning to [IV].Thereby, it is possible between laser irradiating part position 68
Set interval in laser irradiation 66, laser irradiating part position 68 can be cooled down, can made using the stable connection of laser welding
Change.
Furthermore, it is possible to carrying out multiple laser by being set interval to same laser irradiating part position 68 irradiates 66, obtain
Chilling room every and continuously carry out laser irradiate 66.Thereby, it is possible to shorten the weld interval of laser irradiation 66.
[the connection of collector plate and positive terminal or negative terminal（Step S14）]
Connection on collector plate and positive terminal or negative terminal, reference picture 8 and Fig. 9.Fig. 8 and Fig. 9 show current collection
The connection of plate and positive terminal or negative terminal.
This has been connected by preformed hush panel 18.As shown in Fig. 2 the insulative synthetic resin pair of hush panel 18
Base portion 20 is molded, and in the shaping of the base portion 20, insert-molding is carried out to positive terminal 28, negative terminal 30.Should
In the case of, sealing 22 can be engaged with base portion 20, it is also possible to be arranged at base portion 20 after being connected with collector plate 32,34.
As shown in figure 8, in positive terminal 28, negative terminal 30 in the hush panel 18 and the connection of collector plate 32,34, will
Positive terminal 28 in hush panel 18 is placed on the collector plate 32 that is connected with cell device 4 and is positioned, and will be in
The negative terminal 30 of hush panel 18 is placed on collector plate 34 and is positioned.Make the welding face 52 of collector plate 32 and positive terminal
28 welding face 54 is consistent, equally makes the welding face 52 of collector plate 34 consistent with the welding face 54 of negative terminal 30, across
More these welding face 52,54 from laser irradiation device 64 carry out laser irradiation 66 so that as shown in figure 9, make welding face 52,
Melt to be attached them between 54.In the connection of the positive terminal 28, negative terminal 30 with collector plate 32,34, remove
Beyond laser welding, for example, can utilize electron beam welding.
As a result, the positive pole of hush panel 18 is connected with across collector plate 32,34 on the element end face 10 of cell device 4
Terminal 28, negative terminal 30, can make cell device 4 and the integration of hush panel 18.
In addition, make welding face 52,54 that laser irradiation 66 has as one man been carried out across the welding face 52,54, but it is excellent
Select the welding face 52,54 very close to each other and consistent, but not limited to this, or 1 [mm] left and right gap.And solder side
Portion 52,54 can also be respectively inclined plane（Taper surface）.
[inclosure of cell device and the sealing of encapsulating housing（Step S15）]
As shown in figure 1, cell device 4 is accommodated in encapsulating housing 8, and the sealing that will be inserted after electrolyte is impregnated with
Plate 18 navigates to the ca(u)lk end difference 24 for being processed beforehand through ca(u)lk and being formed in encapsulating housing 8.Processed to this by crimping
The open end 26 of encapsulating housing 8 is sealed, and is completed as the battery 2 of product.
The feature item and advantage for enumerating the battery 2 of the 1st implementation method discussed above are as follows.
（1）The protuberance office of the collector 120,140 between positive pole portion 12 and negative pole portion 14 is provided with predetermined exhausted
It is intermarginal every 16.When compression forming has been carried out to the ledge of collector 120,140 towards element central 40, between this is insulated
Prominent length every 16 or collector 120,140 is set as that positive pole portion 12 and negative pole portion 14 do not carry out interval or the length of exposure level
Degree.Additionally, near the element central 40 of cell device 4 for constituting charge storage element, it is convenient to omit for forming positive pole portion
12 and negative pole portion 14 collector 120,140 ledge.
（2）The forming part in positive pole portion 12 and negative pole portion 14 is more（Or area is bigger）, more contribute to the drop of resistance
It is low.Accordingly, as prevent between positive pole portion 12 and negative pole portion 14 short circuit and the insulation gap 16 of low resistance can be realized most
Good value, for example, 3 [mm]~10 [mm].
（3）In addition, in the most peripheral of cell device 4, even if in order in the compression forming in positive pole portion 12 and negative pole portion 14
When shift, be also prevented from positive pole portion 12 and negative pole portion 14 and contacted with encapsulating housing 8, can be by collector plate 32,34
Outer peripheral face on wind insulating tape etc. and insulated, can also be set between the outer peripheral face of collector plate 32,34 and encapsulating housing 8
Dead ring etc. is insulated.
（4）When positive terminal 28 and negative terminal 30 increase with the connection distance of cell device 4, make its internal resistance corresponding
Ground increases.Therefore, by with collector plate 32,34, and connection interval is significantly shortened by laser welding, it is suppressed that
The increase of internal resistance.Specifically, the collector plate 32,34 being connected with the positive pole portion 12 and negative pole portion 14 of cell device 4 be compared with
Thin metallic plate, welding face 52 is formed with the side, and welding face is formed with positive terminal 28 and negative terminal 30
54, these welding faces constitute consistent face.Boundary portion to the welding face 52,54 carries out laser irradiation 66, so that
Form welded connection 38.Realize low resistance（ESR：Equivalent Series Resistance：Equivalent series electricity
Resistance）Change.
（5）Small space is set between cell device 4 and hush panel 18, and they are entered by collector plate 32,34
Row electrical connection, so as to increased the possessive volume of the cell device 4 in encapsulating housing 8.Also, shorten cell device 4 with sealing
The interval of plate 18（Distance）To suppress resistance, the interval of cell device 4 and hush panel 18 is realized（Distance）It is narrowing.
（6）For the collector plate 32,34 on positive terminal 28 and negative terminal 30 and cell device 4, two are will be formed in
The welding face 52,54 of the side surface part of person is set to consistent face, laser irradiation 66 is locally carried out to the position and is welded, therefore
Realize the simplification of its connection treatment and the reinforcing of connecting portion.Herein, positive terminal 28, negative terminal 30 and collector plate 32,34
Thickness（The height dimension of welding face 52,54）The scope of 0.5 [mm]~5 [mm] is for example set at respectively, is to enter
The size of row laser welding, and conduct causes that internal resistance is difficult to increase, and the optimal of the height dimension of battery 2 can be shortened
Value.
（7）Although welding face 52,54 is for example configured to plane, not limited to this, or curved surface by otch,
Whether which in tabular surface or curved surface, as long as ex curia face.Additionally, on welding face 52,54,
In order to not apply to miscellaneous part when laser irradiation 66 is carried out（Positive pole portion 12, negative pole portion 14）Excessive stress, preferably will
Welding face 52,54 is arranged near the outer peripheral face of cell device 4, specifically, is set in the outer peripheral face from cell device 4
Rise in the range of within such as 10 [mm].
（8）As embodiment described above, the terminal connection part 48 in collector plate 32,34 is made（Fig. 7）With element connecting portion
50 shift in the horizontal direction, therefore laser weld is different in the horizontal direction such that it is able to improve laser welding connection
Stability.
（9）It is connected with positive terminal 28, negative terminal 30 using 32,34 pairs of cell devices 4 of collector plate, therefore energy
The simplification of terminal connection is enough realized, makes connection easy.
（10）The shared ratio in the spatial portion of encapsulating housing 8 of terminal connecting structure can be reduced, each can be increased
Ratio shared by the cell device of volume.
（11）In the hush panel 18 as package parts, cell device 4 is supported securely.That is, by laser welding or
Electron beam welding, cell device 4 is fixed firmly on positive terminal 28 and negative terminal 30 via collector plate 32,34,
Therefore improve the bearing strength of cell device 4（It is fastness）.As a result, constituting mechanically firm supporting construction, energy
Enough improve the vibration strength of product.
（12）By collector plate 32 using laser welding by the parallel connectionization of collector 120 of side of the positive electrode, by the profit of collector plate 34
With laser welding by the parallel connectionization of collector 140 of negative side, therefore, it is possible to realize the low resistance of cell device 4 and battery 2, energy
Enough provide internal resistance low product.
（13）Due to having used collector plate 32,34, therefore protrusion need not be connected on cell device 4.
（14）Already described manufacturing process can be utilized, the grade electrical storage device of battery 2 is easily manufactured, can realize that terminal is connected
The simplification of operation.
[the 2nd implementation method]
2nd implementation method is included between outside terminal and collector plate the structure for possessing connecting plate as terminal component.
On the 2nd implementation method, reference picture 10 and Figure 11.Figure 10 is decomposed and is shown the battery comprising connecting plate, and Figure 11 shows
The attachment structure example of connecting plate is gone out to possess.In Figure 10 and Figure 11, pair label identical with Fig. 2 identicals part mark.
In the 2nd implementation method, as shown in Figure 10, possesses the connecting plate 72,74 of side of the positive electrode and negative side as terminal
Part.Connection positive terminal 28, the coupling recess portion 76 of negative terminal 30 are respectively formed with connecting plate 72,74, in side shape
Cheng You 3 welds face 78.In the present embodiment, the positive terminal 28 and negative pole end for being protruded to the lower face side of hush panel 18
Son 30 is columned, coupling recess portion 76 is formed with the way of being matched with its end face, but be not limited to circle.Additionally, each welding
Face 78 is, for example, tabular surface, and the welding face 52 of collector plate 32,34 is different from the 1st implementation method, is formed at and welding face
78 consistent positions.Other structures are identical with the 1st implementation method.
As shown in figure 11, following structure can be set to：It is the connecting plate 72 that is connected with positive terminal 28 by laser welding, same
The connecting plate 74 that sample ground is connected by laser welding with negative terminal 30 be overlaid be connected with cell device 4 collector plate 32,
34, by laser welding to being attached between consistent welding face 52,78.
In such structure for having used connecting plate 72,74, as the positive terminal 28 and negative pole end of outside terminal
Son 30 with and the collector plate 32,34 that is connected of the side of cell device 4 join domain expansion, therefore, it is possible to reduce connection resistance, and
Bonding strength can be improved.
[the 3rd implementation method]
3rd implementation method is included makes the structures different with the 1st implementation method from the scope of the electrode portion of collector plate connection.
On the 3rd implementation method, reference picture 12.Figure 12 shows collector plate, the positive pole portion of cell device and negative pole portion
One example.In fig. 12, pair label identical with Fig. 2 identicals part mark.
In the 1st implementation method（Fig. 2）In, the rear side of collector plate 32,34 is set to flat and element connecting portion is formd
50, but can possess as shown in the A of Figure 12：Prominent face 80, it has and is relative to the outside terminal side of cell device 4
The tabular surface of the state for for example being protruded with 60 degree of scopes；With concave part 82, it is clipped by the protrusion face 80 and then moves.
As shown in the B of Figure 12, or, on the element end face 10 of the side of cell device 4, in positive pole portion 12, negative pole portion
14 possess the recess 84 being for example recessed with 60 degree of scopes and the convex portion 86 protruded across the recess 84, and recess 84 is set to not formed
Negative pole portion 14 or the position in positive pole portion 12, convex portion 86 are set to the position of the center position compression forming towards cell device 4.As schemed
Shown in 12 C, teat 86 is by the center position compression forming towards cell device 4.Also, can also be same with above-mentioned implementation method
Sample ground, positive pole portion 12 is connected and fit with collector plate 34 with collector plate 32, negative pole portion 14 by laser welding.
[the 4th implementation method]
4th implementation method includes following structure, and the structure possesses：Collector plate, it has the end of terminals side protrusion towards the outside
Sub- connecting portion；And preset width as fold line is bent and overlapped onto as charge storage element from element end face
Single or multiple electrode projections on the element end face of the cell device of example.
Battery on the 4th implementation method, reference picture 13.Figure 13 shows an example of each part of battery.In figure
In 13, pair label identical with Fig. 2 identicals part mark.
As shown in figure 13, the terminal connection part 48 being connected with positive terminal 28, negative terminal 30 of each collector plate 32,34 is
Sector, and protruded from the rear side of collector plate.Being provided with insulation gap 16 on the identity element end face 10 of cell device 4
Mode is formed with positive pole portion 12, negative pole portion 14.
Then, on the formation of cell device 4, positive pole portion 12 and negative pole portion 14, reference picture 14, Figure 15.Figure 14 shows
One example of collector, Figure 15 shows cell device.In Figure 14, Tu15Zhong, pair mark identical with Fig. 2 identicals part mark
Number.
The electrode projection of the collector 120 that positive pole portion 12 passes through side of the positive electrode is that non-painting portion 88 is formed, and negative pole portion 14 leads to
The electrode projection i.e. non-painting portion 88 for crossing the collector 140 of negative side is formed.
Aluminium foil is for example used in the base material 90 in positive pole portion 12 and negative pole portion 14.Base material 90 is the shoestring of same widths,
As shown in the A of Figure 14, two-sided in base material 90 is formed with the polarizability electrode comprising activated carbon isoreactivity material and bonding agent etc.
92.When the polarizability electrode 92 is formed, the non-painting portion 88 of one fixed width is formed with the edge side of base material 90, this is not
Finish department 88 is the non-formation part of polarizability electrode 92.The non-painting portion 88 is already described electrode projection, by the non-application
Portion 88 forms positive pole portion 12 or negative pole portion 14.
As shown in the B of Figure 14, the fold line 60 of one fixed width is formed to non-painting portion 88, the fold line 60 forms edge.
The fold line 60 is not indentation but line, is prevented from positive pole portion 12 and negative pole portion 14 buckling in bending.The fold line
60 can be groove, and cross sectional shape can be triangle, quadrangle, can also bend.Additionally, as the formation side of the fold line 60
Method, for example, can enumerate punching press, laser, cutting etc..Fold line 60 is constituted as shown in the B of Figure 14 by 1, but it is also possible to considered
The size of non-painting portion 88 and formed by many, and fold line 60 can be single or double.
In the formation of the electrode portion, as shown in the C of Figure 14, the different multiple of width is being formed with collector 120 just
Pole portion 12（88）, as shown in the D of Figure 14, the different multiple negative pole portions 14 of width are formed with collector 140（88）.Each positive pole
Portion 12 is formed at different intervals in the element end face 10 of cell device 4 in the way of being just brought out every half cycle.Additionally, each negative
Pole portion 14 also draws in the element end face 10 of cell device 4 every half cycle, and is set between positive pole portion 12 and negative pole portion 14
Surely there is already described insulation gap 16.Also, it is formed with fold line 60 in each positive pole portion 12 and each negative pole portion 14.
Also, cell device 4 is by using spool (not shown), as shown in Figure 15, each collector 120,140 it
Between they are wound across separator 56,58, so as to be formed as the cell device 4 of winding element.In the cell device 4
An element end face 10 on, positive pole portion 12 and negative pole portion 14 are formed every half cycle.
Positive pole portion 12 or negative pole portion 14 are the width W of the separator 56,58 for being used for insulating unit1Prominent form, shape
As length L corresponding with the arc length in each positive pole portion 12 or negative pole portion 141.Additionally, each positive pole portion 12 or negative pole portion 14 exist
The width W of the regulation of distancing element end face 102Position at be formed with fold line 60.Element end face 10 is by cell device 4
The edge of the separator 56,58 that end face exposes is formed.Fold line 60 is formed as making relative with the element central 40 of element end face 10
Towards interior folding.Distancing element end face 10 is the width W of regulation2Be preferably dimensioned to be more than 0.5 [mm], by so from
The end position of the separator of element end face 10 separates the width W of regulation2Fold line 60 is formed at position afterwards, in bending positive pole
When portion 12 or negative pole portion 14, the mechanical stress for being applied to separator 56,58 is reduced, so as to prevent each collector 120,140
The short circuit that contact causes.Furthermore it is preferred that the prominent length size that positive pole portion 12 and negative pole portion 14 protrude from element end face 10 is set
It is 3 [mm]~10 [mm].
Then, on the shaping of each electrode portion, reference picture 16 and Figure 17.Figure 16 shows each electrode portion before and after shaping,
Figure 17 shows the completed state of electrode portion.In Figure 16, Tu17Zhong, pair label identical with Fig. 6 identicals part mark.
As shown in the A of Figure 16, export to the positive pole portion 12 or negative pole portion 14 of the element end face 10 of cell device 4 with collection
Before electroplax 32 or collector plate 34 are connected, cell device 4 is formed in be close to state by processing as shown in the B of Figure 16
Element end face 10 on.
As shown in the A of Figure 16, erect with heeling condition by fold line 60 on the element end face 10 of cell device 4 and set
There are the positive pole portion 12 and negative pole portion 14 for constituting electrode projection, regulation is set between these positive pole portions 12 and negative pole portion 14
The insulation gap 16 of width.Insulation gap 16 and element central 40 are taken into Y-axis as center, the direction vertical with the Y-axis is taken
It is X-axis, centered on X-axis, left and right sets angle, θ1、θ2（＞ θ1）To be divided.In angle, θ1Place, with cell device 4
Element central（Core）Multiple otch 94 are provided with centered on 40 in a radial direction, are formed with by respectively cutting in the side of positive pole portion 12
Multiple division 12A, 12B, 12C that mouth 94 is divided.Equally, the side of negative pole portion 14 be also formed with multiple division 14A, 14B,
14C.If by angle, θ1It is set as such as 30 [°], then division 12A, 14A turns into 2 θ1=60 [°], across division 12A and shape
Into division 12B, 12C or division 14B, 14C formed across division 14A angle, θ2For example it is set to θ2=
60[°]。
Depth on otch 94, for example, prominent length is set as the height h in positive pole portion 12 and negative pole portion 141, make just
Division 12A, 12B, division 14A, 14B of 12C and negative pole portion 14, the 14C in pole portion 12 are in the already described folding in middle part
Bent at superimposing thread 60, pushed over to the core direction of cell device 4 and be compressed shaping, thus as shown in the B of Figure 16, be shaped to
Each division 12A, 12B, division 14A, 14B of 12C and negative pole portion 14,14C.In the present embodiment, each division
12B, 12C and division 14B, 14C are set to the part welded with collector plate 32,34.Therefore, by division 12A,
The projecting height h of 14A2It is set higher than the height h of each division 12B, 12C, 14B, 14C3So that division 12A, 12B,
Division 14A, 14B in 12C and negative pole portion 14, the height of 14C are corresponding with the curved shape of collector plate 32,34.In addition, right
In the positive pole portion 12 and negative pole portion 14 of cell device 4, by center position in this wise towards cell device 4 to whole positive pole portions
12 and negative pole portion 14 be compressed shaping, it is suppressed that height dimension.Division 12B in the present embodiment, to positive pole portion 12,
12C is compressed the joint face of shaping and the flat condition of formation stabilization, afterwards, the division 12A as disconnected face is carried out
Compression forming, it is suppressed that the height of the boundary portion produced due to the overlap of 12A-12B, 12A-12C between each division
Size.The suppression of the height dimension on the boundary portion, it is similarly such for negative pole portion 14.
In the molding procedure in each positive pole portion 12 and each negative pole portion 14, after winding battery element 4, in element end face 10
Positive pole portion 12, the negative pole portion 14 exposed as shown in the A of Figure 17, by fold line 60 to relative centered on element central 40
It is relative in the state of the bending of direction.Therefore, as shown in the B of Figure 17, in order to realize the connection with collector plate 32,34, in element
The side of the heart 40 is bent using fold line 60 and is formed already described division 12B, 12C, 14B, 14C.
And, as shown in the C of Figure 17, using fold line 60, make division 12A, 14A further to the lateral bending of element end face 10
Folding.
Then, on collector plate 32,34, reference picture 18.Figure 18 shows an example of collector plate.In figure 18, it is right
Label identical with Fig. 6 identicals part mark.
The collector plate 32,34 of present embodiment is formed by with electrode material identical such as aluminium sheet.As shown in Figure 18 A, B,
Collector plate 32 covers division 12A, 12B, the 12C in already described positive pole portion 12（Figure 16）, possess following shape and area：With with
Laser welding area between division 12B, 12C and with the laser welding area between positive terminal 28.Collector plate 34
Division 14A, 14B, the 14C in the already described negative pole portion 14 of covering（Figure 16）, possess following shape and area：With with division
Laser welding area between 14B, 14C and with the laser welding area between negative terminal 30.In the present embodiment,
The collector plate 32,34 is the size of 1/2nd of the element end face 10 of cell device 4, used as the shape for ensuring insulation gap 36
Shape, substantially semicircular plate.
As shown in the A of Figure 18, on collector plate 32,34, at the central part of string side, the element central 40 with cell device 4
The notch 44 of arc-shaped is correspondingly formed, welding face 52 is formed with its arc side, the welding face 52 is in being with X-axis
The heart linear shape on the direction vertical with X-axis is cut off and is formed.Additionally, as shown in the B of Figure 18, in the collector plate 32 or
On collector plate 34, the terminal connection part 48 of arc-shaped is formd based on end difference 96, and unit is formed with across terminal connection part 48
Part connecting portion 50, the end difference 96 is the angle, θ in left and right centered on notch 44, i.e. centered on X-axis1Place curves directly
Angle and formed.Each terminal connection part 48 and element connecting portion 50 protrude terminal connection part 48, across end difference 96 and structure
Into parallel surface.
In the collector plate 32,34, when the height for setting terminal connection part 48 is h4, collector plate 32,34 thickness for t, end
The height of the inner side of sub- connecting portion 48 is h5When, it is set as：
h5=h4- t≤h2- h3…（1）.
Therefore, the height h of the inner side of terminal connection part 485Absorb the projecting height h of division 12A, 14A2With each stroke
The height h of branch 12B, 12C, 14B, 14C3Between poor Δ h（=h2-h3）, collector plate 32 is arranged to be close to each division
Portion 12B, 12C, and receive division 12A.
Then, the connection on collector plate 32,34 and cell device 4, reference picture 19.Figure 19 shows collector plate and battery
The connection of element.
As shown in figure 19, notch 44 is made to be matched somebody with somebody in alignment with the ground of element central 40 of the element end face 10 of cell device 4
Put, insulation gap 36 is accordingly set with the insulation gap 16 between positive pole portion 12 and negative pole portion 14.On collector plate 32, electricity
The division 12A in the positive pole portion 12 of pond element 4 is positioned and is close to the lower face side of terminal connection part 48, cell device 4
Division 12B, 12C in positive pole portion 12 be positioned and be close to collector plate 32 element connecting portion 50 lower face side.Also,
In laser irradiating part position 68, irradiated using the laser from the periphery direction of cell device 4 towards core direction so that division
12B, 12C and element connecting portion 50 partially or entirely melt to be attached.It is such to be connected to the side of collector plate 34
It is the same.Soldering is identical with the 1st implementation method, therefore identical label is marked in Figure 19, and simultaneously the description thereof will be omitted.
Then, the connection on the collector plate 32,34 on cell device 4 Yu outside terminal, reference picture 20.Figure 20 shows
The connection of collector plate and outside terminal on cell device.
As shown in the A of Figure 20, the positive terminal 28 of hush panel 18, negative terminal 30 are positioned to the company of collector plate 32,34
Connect position.Be formed with positive terminal 28 and negative terminal 30 welding face 54, the welding face 54 be with collector plate
32nd, the welding face 52 of 34 sides forms the side wall in same face.Therefore, if as shown in the B of Figure 20, make welding face 52,
54 are aligned so that with already described laser irradiation device 64（Fig. 8）Laser irradiation 66 is carried out, then by laser between welding facial 52,54
Welding, pair can be attached with collector plate 32,34 corresponding positive terminals 28, negative terminal 30.The soldering can be with profit
With such as electron beam welding.
Therefore, in the positive pole portion 12 and negative pole portion 14 of cell device 4, by laser irradiating part 68 connect collector plate 32,
34.Also, in the positive pole portion 12 of cell device 4, welded connection 38 is passed through across collector plate 32（Fig. 9）It is connected with positive terminal
Son 28, and in the negative pole portion 14 of cell device 4, welded connection 38 is passed through across collector plate 34（Fig. 9）It is connected with negative pole
Terminal 30.Thus, it is formed with outside terminal on cell device 4.
If here, the interval between cell device 4 and hush panel 18（Distance）Length is obtained, then resistance correspondingly increases
Plus, and battery 2 height dimension increase, therefore shorten the interval between cell device 4 and hush panel 18 as much as possible（Away from
From）.In order in such small space, positive terminal 28 and negative terminal 30 and collector plate 32,34 be connected, consistent
The laser irradiation 66 that can be locally welded is carried out between welding face 52,54, the letter of welding is realized by the treatment
Change and strengthen.Herein, collector plate 32,34, the thickness of positive terminal 28 and negative terminal 30 be each set to 0.5 [mm]~
The scope of 5 [mm], thus is difficult to increase, and can shorten battery 2 as the size that can carry out laser welding, and internal resistance
Height dimension.
Additionally, in the present embodiment, on welding face 52,54, in order to prevent in laser irradiation 66 to other portions
Part（Positive pole portion 12, negative pole portion 14）Excessive stress is produced, facial 52,54 peripheries for being arranged at cell device 4 will be preferably welded
Near face, specifically, be preferably in from the outer peripheral face of cell device 4 within such as 10 [mm] in the range of.
Additionally, on collector plate 32,34, with the positive pole portion 12 of cell device 4 and the join domain in negative pole portion 14 and with
The join domain of positive terminal 28 and negative terminal 30 is set in different positions, therefore, it is possible to cause each electrode portion 12,
14 with collector plate 32,34, the stable connection of each outside terminal 28,30 and collector plate 32,34, it is possible to increase cell device 4 it is low
The electrical characteristics such as resistance, the reinforcing of connection.
In addition, in the present embodiment, it is also possible to such as the 2nd implementation method（Figure 10）As shown in, be set to collector plate 32,
Possesses the structure of connecting plate 72,74 between 34 and positive terminal 28, negative terminal 30.
[the 5th implementation method]
5th implementation method is comprising for laser irradiating part position（Sealing wire）Laser output control.
On the 5th implementation method, reference picture 21.Figure 21 shows the control form of laser output.
On the welding realized by laser irradiation 66, as shown in figure 21, the A of Figure 21 is shown as collector plate 32,34
On already described sealing wire an example laser irradiating part position 68.By the laser irradiating part position 68 welding starting point 68S with
It is set as interval a, b, c between welding terminal 68E, and interval d is set outside welding terminal 68E.
In the laser welding, as one of light beam illumination unit, optical fiber irradiation device 64, laser irradiating part have been used
Position 68 is the weld part based on laser irradiation 66.In this case, using protective gas such as argon gas or helium, weld is carried out
Reason.
In the laser irradiation 66 of the laser irradiation device 64, with fixed irradiation speed, on laser irradiating part position 68
Interim and continuously change light beam output.In the present embodiment, as shown in the B of Figure 21, laser output P quilts in interval a
It is set as that laser exports the fixed value of Pa, laser output Pb is set in interval b（＜ Pa）Fixed value, in interval c
Laser output Pc is decayed to from laser output Pb（＜ Pb）.The laser output Pa of interval a is set to peak, is as one
50 [W]~3000 [W].The laser output Pb of interval b exports Pa less than laser, is that less than the 90% of laser output Pa laser is defeated
Go out.In addition, interval c laser output Pc be less than laser export Pb value, and be laser output Pa less than 80% laser it is defeated
Go out.In this case, the transverse axis of the B of Figure 21 represents distance [mm].
The laser output Pa irradiated at welding starting point 68S is set to peak, and its irradiation interval a is set to compare area
Between b short times.After interval a, the interval b that the laser that laser exports Pb irradiates is set to most long.In addition, interval c quilts
It is set as the interval shorter than interval b, in the interval c, laser output Pb straight lines is decayed into laser output Pc.So, can be with
Make laser output attenuatoin near welding starting point 68S and welding terminal 68E.That is, it is preferable that at least more than 2 intervals are deposited
In the decay of laser output.
To laser irradiating part position 68 laser scanning speed be fixed speed, for example can be from 300 [mm/ seconds]~3,
The fixed speed of selection in 000 [mm/ seconds], but can be according to interval change sweep speed.
If so controlling laser to export by laser irradiating part position 68, following effect is can obtain.
（1）Stage and continuously control are directed to positive pole portion 12 or negative pole portion 14 from collector plate 32,34 and cell device 4
Laser welding welding starting point 68S to welding terminal 68E sealing wire laser output, for example make laser output attenuatoin, because
This enables to the welding energy for being applied to collector plate 32 or 34 and the positive pole portion 12 as electrode projection or negative pole portion 14 equal
It is even, it is possible to increase connectivity.
（2）Laser output is set at the starting point 68S of laser irradiation higher, carried out with laser output energy higher
Laser irradiates.By the collector plate 32,34 of laser irradiation 66 and the sealing wire in positive pole portion 12 or negative pole portion 14 and its near
Heated part.That is, if carrying out laser irradiation 66 along sealing wire, heating part corresponding with the scanning of laser irradiation 66
Point with the scanning together with chain state move, therefore, even if not by laser output be set as it is identical, become also chainly melting
State.Therefore, it is interim and continuously even if exporting laser（Above-mentioned implementation method）, it is interim or continuously decay,
Enable to be applied to the uniform thermal power of the laser irradiation 66 of weld part.Therefore, it is possible to improve collector plate 32,34 and positive pole portion 12
Or the connectivity in negative pole portion 14.
（3）In the case of assuming that laser output is maintained into constant, the place that heat energy can be produced excessive, due to forming electricity
The electrode of pole protuberance is thin, therefore can produce melting uneven due to excessive centralized heat energy so that collector plate is protruded with electrode
The connectivity in portion is unstable, but the control exported by laser（For example decay）Above-mentioned unfavorable condition can be avoided.
（4）In the case where laser irradiating part position 68 is set as into a plurality of line, it is also possible to carry out identical control.For
The continuous action of [I] to [IV] of the laser irradiation stated, if not to same position Continuous irradiation laser, but from [I] extremely
[IV] carry out laser welding, then to different parts irradiation laser, then the laser at same position can be irradiated and set
Time interval, as a result, the cooling of laser irradiating part position can be realized, the connection that can realize being formed by laser welding
Stabilize.
（5）Can laser irradiating part position 68 be set into two parallel sealing wires to set laser irradiating part position 681,682.
In this case, as shown in the A of Figure 22, in the laser welding of each laser irradiating part position 681,682, chilling room is set every carrying out
Laser irradiation 66.If in this case, the line interval of laser irradiating part position 681,682 is set into W9, then line interval W9For example can be with
It is set within 3 [mm].And laser irradiating part position 681,682 can partly repeat.Each laser irradiating part position 681,682 leads to
Cross the situation that laser irradiation device 64 independently welded set as has been described, respectively starting point 681S, 682S and terminal 681E,
682E, already described interval a, b, c, d is set according to welding scanning direction.In laser irradiating part position 681 and laser irradiating part position 682
In, welding scanning direction is rightabout.On such laser irradiation 66, set as shown in the B of Figure 22 to each interval
The laser output of a, b, c.Already described effect can be also obtained using said structure.
[the 6th implementation method]
6th implementation method is included under pressed state the knot to being carried out laser welding by fixed collector plate and cell device
Structure.
On the 6th implementation method, reference picture 23.Figure 23 shows the stationary state and positioning instrument of collector plate.In Figure 23
In, pair label identical with Fig. 2 identicals part mark.
As shown in the A of Figure 23, collector plate 32,34 is positioned horizontally the side of element end face 10 to cell device 4.The positioning
In employ multiple chuck mechanisms 98 and a pair of interval holding mechanisms 100, and employ positioning instrument 102.Chuck mechanism 98
Possess and be configured at as the respective multiple positions of collector plate 32,34, the multiple chucks for radially configuring of keeping object
982.Each chuck 982 makes the restoring force of the spring 984 in compressive state play a role.In this case, it is also possible to be to make tension force
The structure for playing a role.
Possess in interval holding mechanism 100 and be arranged in the insulation gap 36 of collector plate 32,34 across positioning instrument 102
A pair of pads 103.Each pad 103 is configured between the opposite face of collector plate 32,34.The one fixed width having by pad 103,
It is parallel to maintain each pad 103, and set the insulation gap 36 of collector plate 32,34.
Already described positioning instrument 102 is provided with the interval of each pad 103, makes the notch 44 of collector plate 32,34 embedding
The positioning instrument 102 is closed, so that it is determined that the center of collector plate 32,34.
As shown in the B of Figure 23, positioning instrument 102 possesses in central part and blocks with the arc-shaped notch 44 of collector plate 32,34
The cylindrical portion 1021 of conjunction, possesses flat a pair of arms 1022,1023 in the side wall of the cylindrical portion 1021.Each arm 1022,
1023 are formed on the axial direction and diametric(al) of cylindrical portion 1021.As shown in the A of Figure 23, each arm 1022,1023 is arranged at collection
The opposite face of electroplax 32,34 is interior, and is held by each pad 103, makes the notch 44 of cylindrical portion 1021 and collector plate 32,34
It is chimeric.Therefore, the diameter and its arc surface of cylindrical portion 1021 are consistent with the internal diameter of notch 44.
Also, as shown in the A of Figure 24, cell device 4 is configured together with collector plate 32,34, under the configuration status, be in
The positive pole portion 12 and negative pole portion 14 of the element end face 10 of cell device 4 in the state of being bent with already described fold line 60 with current collection
The lower surface contact of plate 32,34, so as to be horizontally positioned.In this condition, as shown by arrows, from the downside of supporting member 104
Apply pressure 106 to cell device 4 and collector plate 32,34.That is, cell device 4 is made relative to the collector plate for being positioned and fixing
32nd, 34 rise, and positive pole portion 12 and negative pole portion 14 are pressed into the lower face side of collector plate 32,34.
The chuck mechanism of cell device 4 is up supported in the pressure 106 relative to the lower face side from cell device 4
In 98 chuck 982, be provided with covering collector plate 32,34 upper surface side and the supporting convex portion 980 that is supported.In battery
The edge upper surface of the collector plate 32,34 of the side of element 4 contacts with each supporting convex portion 980, and level maintains the current collection on cell device 4
Plate 32,34, and maintain the depth of parallelism with the element end face 10 of cell device 4.
So, cell device 4 maintains the state after by top to the upper limit position shown in the B of Figure 24, carries out laser
Welding.In this case, maintaining into stationary state as following.
a）Supporting member 104 is accurately ensured the depth of parallelism with collector plate 32,34, therefore the same face is fixed in maintenance
The depth of parallelism of collector plate 32,34 and element end face 10.
b）Each collector in positive pole portion 12 and negative pole portion 14 is in bending（With the degree of the angle less than 90 degree）It is obtuse-angulate
Under state, the lower face side of collector plate 32,34 is pressed against, is maintaining the collector plate 32,34 and element end face 10 of the depth of parallelism
Between positive pole portion 12 and negative pole portion 14 are controlled into case of bending.
c）Make the notch 44 of the central part in collector plate 32,34 corresponding with the cylindrical portion 1021 of positioning instrument 102, make
The central part of the notch 44 of collector plate 32,34 aligns with cylindrical portion 1021.The circle surrounded by the notch 44 of collector plate 32,34
Post portion 1021 is configured at the element central of cell device 4 in pressing（It is winding center in the case of winding element）40.By
This, by the element central 40 of the centralized positioning of the notch 44 of collector plate 32,34 to cell device 4.Collection after being positioned such that
The top configuration laser irradiation device 64 of electroplax 32,34.
Pressed state on such positioning and positive pole portion 12 and negative pole portion 14, reference picture 25（The B of Figure 25 is in mapping
On, eliminate positive pole portion 12, the center section in negative pole portion 14 shows.）.
It is following state in the state of shown in A in Figure 25：Make the positive pole portion of the element end face 10 in cell device 4
12 contact with collector plate 32, negative pole portion 14 is contacted with collector plate 34.The state be press cell device 4 before stage or its at the beginning of
Stage beginning.In addition, the A of Figure 25 shows division 12B, 12C in positive pole portion 12 and division 14B, 14C in negative pole portion 14.
Additionally, in the state of shown in B in Figure 25, into the pressurized state to cell device 4（Figure 24）, positive pole portion 12 exists
Contacted with collector plate 32 under pressurized state, be already described obtuse angle state.Equally, negative pole portion 14 under pressurised conditions with collector plate 34
Contact, is already described obtuse angle state.That is, each collector in positive pole portion 12 can be made to be close to and very close to each other be connect with collector plate 32
Touch, equally make each collector in negative pole portion 14 be also close to and it is very close to each other contacted with collector plate 34, can efficiency make well
The heat energy of laser welding acts on weld part.
[the 7th implementation method]
7th implementation method is included and has used the welding that arc-shaped is formd on the basis of the element central of cell device face
Collector plate structure.
On the 7th implementation method, reference picture 26.Figure 26 shows the electrode portion of collector plate and cell device.In fig. 26,
Pair label identical with Fig. 6 identicals part mark.
As shown in figure 26, in the collector plate 32,34 of present embodiment, for example it is formed between each element connecting portion 50
The terminal connection part 48 of 90 degree of fan shape, terminal is formed with the terminal connection part 48 and sets the welding of face the 110, the 1st
Face 112 and element covering part 114.
It is the face for setting outside terminal that terminal sets face 110, and its form is, for example, tabular surface portion, and is placed with positive pole
Terminal 28 or negative terminal 30.The face of positive terminal 28 or negative terminal 30 is set to tabular surface, make each positive terminal 28 or
Negative terminal 30 sets face 110 and is close to terminal.The rear side for setting face 110 in the terminal is formed with and allows cell device 4
The recess 116 of the division 14A insertions of the division 12A or negative pole portion 14 in the positive pole portion 12 of side.
Welding face 112 is directed towards the face of the arc-shaped of the side of cell device 4.Element covering part 114 is as follows
Flat face：Welding face 112 is declined as step difference between terminal sets face 110, covers cell device 4
Element end face 10.That is, by retain in each collector plate 32,34 flat terminal set face 110 and in arc-shaped it is right
Element covering part 114 is cut or is molded, and welding face 112 turns into by terminal setting face 110 and element covering part 114
The arc surface that step difference is formed.The arc surface of welding face 112 is centered on the element central 40 of cell device 4 and battery
The identical or approximate concentric disc of element 4.On cell device 4, to each several part mark and above-mentioned implementation method identical label,
And the description thereof will be omitted.
Then, the welding on collector plate 32,34 Yu outside terminal, reference picture 27.Figure 27 shows collector plate 32,34 and
The welding example of outside terminal.
As shown in figure 27, set in the positive pole portion 12 of the element end face 10 of cell device 4 and be welded with the current collection of side of the positive electrode
Plate 32, sets in negative pole portion 14 and is welded with the collector plate 34 of negative side.In this case, the terminal in collector plate 32 sets face
Positive terminal 28 is provided with 110, the terminal of collector plate 34 to set and be provided with negative terminal 30 on face 110.Positive terminal 28
The welding faces 112 that are positioned to collector plate 32 of welding face 54, form uniform face.Equally, negative terminal 30
Welding face 54 is positioned to the welding face 112 of collector plate 34, forms uniform face.
It is set as the same face by so making two faces consistent, and carries out laser irradiation 66, makes welding face
54th, welding between 112.Face 110 is set in the terminal of collector plate 32 and is connected with positive terminal 28, set in the terminal of collector plate 34
Put face 110 and be connected with negative terminal 30.That is, the positive pole portion 12, negative terminal of cell device 4 is connected with positive terminal 28
Negative pole portion 14 is connected with 30.
So, each welding face 54,112 is set to the arc surface with same curvature radius, therefore, it is possible to make based on sharp
The weld portion of light irradiation 66 is changed on a large scale, but not limited to this, additionally it is possible to each welding face 54,112 is set to identical straight line
The face of shape.
Then, on laser welding, reference picture 28.Figure 28 shows an example of laser irradiating angle and solder side.
Each collector plate 32,34 is configured on the basis of the element central 40 of the element end face 10 of cell device 4, with battery
The positive pole portion 12 or negative pole portion 14 of element 4 connect.Therefore, as shown in figure 28, it is arranged at the positive terminal that terminal sets face 110
28 or negative terminal 30 make welding face 54 facial with welding 112 consistent.The direction of laser emitting portion 118 of laser irradiation device 64
Welding face 54,112 is configured.
If the distance for setting laser emitting portion 118 with the illuminated laser spot 119 of welding face 54,112 is Lp, even if with
Element central 40 makes laser irradiation device 64 be rotated up in the side of arrow N for center of rotation, it is also possible to maintain apart from Lp.And
And, if setting the rotational angle of cell device 4 centered on illuminated laser spot 119 as θ, and the rotation is set in the range of welding
Angle, θ, then Lp can similarly carry out laser irradiation 66 and be welded to welding face 54,112 at the same distance.Laser
Irradiation 66 it is identical apart from Lp, and can be carried out continuously stabilization laser irradiation 66, carry out uniform soldering.Can carry
The reliability of height connection.
In addition, in the present embodiment, rotating laser irradiation device 64, but it is also possible to fix the laser irradiation device
64, the side of cell device 4 is rotated the angle, θ of regulation, carry out the scanning of laser irradiation 66.
[the 8th implementation method]
8th implementation method carries out the situation of laser welding comprising the thermal capacitance for increasing collector plate.
As has been described, as electrical storage device a battery for example 2 constitute charge storage element cell device 4 unit
Possesses collector plate 32,34 on part end face 10.It is convoluted element but it is also possible to be winding as a cell device for example 4
Element, such as superimposed elements beyond type element.Between the collector plate 32,34 that element end face 10 is connected, in manufacture battery 2
When, the positioning instrument 102 of the collector plate 32,34 shown in Figure 23 and Figure 24 is used as radiating instrument and pad.
The structure of cell device 4 is identical with above-mentioned implementation method, therefore mark identical label, and the description thereof will be omitted.
Each collector plate 32,34 is the terminal component being clipped between cell device 4 and outside terminal (not shown), such as Figure 27 institutes
Show, collector plate 32 is by welding and division 12B, 12C of side of the positive electrode（Figure 26）Connection, collector plate 34 similarly with negative side
Division 14B, 14C is connected.In each collector plate 32,34, centered on notch 44, terminal connection part 48 is formed with, and every
The terminal connection part 48 and be formed with element connecting portion 50.Terminal connection part 48 is and outside terminal（The positive terminal 28 of Fig. 1 or
Negative terminal 30）Side connection part and between element connecting portion 50 set step difference and be set to higher.
As shown in figure 26, the convex portion 122 of rectangular-shape is formed with each element connecting portion 50 of collector plate 32,34, respectively
Convex portion 122 forms heavy section in the acies portion of the relative edge face 124 of each collector plate 32,34.Formed by each convex portion 122
Heavy section increase the thermal capacitance of collector plate 32,34, and constitute collector plate 32,34 by holding unit（Such as chuck）Hold
By handle part.Can be mutually separately formed with convex portion 122 by handle part.
Each collector plate 32,34 navigates to the element end face of cell device 4 on the basis of the element central 40 of cell device 4
10, and it is set with insulation gap 36 in the same manner as already described insulation gap 16.Therefore, employed in the manufacture of battery 2 already described
Positioning instrument 102（Figure 23）.The positioning instrument 102 is an example of heat-sink unit.The positioning instrument 102 is by heat absorption
The good metal material of property, thermal diffusivity, such as steel are formed, and possess cylindrical portion 1021 as center maintaining part, and with the circle
There is already described arm 1022,1023 as interval holding portion in diametric(al) centered on post portion 1021.
Cylindrical portion 1021 is will to navigate to element central portion 40 as the notch 44 of each collector plate 32,34 of positioning object
Columnar part.The height of the columnar part is formed as highly consistent, identical or higher than its with notch 44.Cylindrical portion 1021
The radius of periphery is formed as identical with the radius of the inner peripheral surface of notch 44.
Arm 1022,1023 is following parallel portion：With each relative edge face 124 of the collector plate 32,34 of relative configuration
Abut, with cylindrical portion 1021 centered on notch 44, spaced and parallel by collector plate 32,34 remains insulation gap 36.
The shape of arm 1022,1023 is the plate body being made up of flat cuboid, and is formed with parallel datum level with positive and negative
102A、102B。
According to the positioning instrument 102, if making notch 44 contact the cylindrical portion 1021 at the center for being configured at cell device 4
Week face, and relative edge face 124 is close to datum level 102A, 102B of arm 1022,1023, then insulation gap 36 is set
And each collector plate 32,34 is navigated to the appropriate position of the element end face 10 of cell device 4.And, positioning instrument can be made
102 contact as thermal component with each collector plate 32,34.
The collector plate 32,34 of cell device 4 is placed on as has been described from laser irradiation device 64 to collector plate 32,34
Laser irradiating part position 68 carries out laser irradiation 66 and is welded.Laser irradiation 66 can simultaneously be carried out at 4 positions, also may be used
Carried out with alternate selection each several part.
By forming convex portion 122, the thermal capacitance of each collector plate 32,34 and the volume of convex portion 122 accordingly increase.Also,
In the case of carrying out laser irradiation 66 to laser irradiating part position 68, the heat produced in welding position is for example dissipated by convex portion 122
Heat.Additionally, the heat of laser irradiating part position 68 also flows to positioning instrument 102, by each pad 103（Figure 23）Radiated.It is such
Heat of the radiating form similarly to being produced in other laser irradiating parts position 68 radiates.
The thermal capacitance of so each collector plate 32,34 is increased by a formation for the convex portion of example 122 as heavy section,
Thus already described heat sinking function can be improved, the result is that, it is possible to increase it is given to from laser irradiation device 64 in laser welding
The welding energy of each laser irradiating part position 68.As a result, can suppress in conventional laser welding when raising laser output
When, due to collector plate 32,34 or constitute positive pole portion 12 as electrode projection, negative pole portion 14 electrode foil it is relatively thin and produce
Raw lack part or inequality.And, can pass through in the unfavorable condition for reducing the not connected portion of generation in the case that laser is exported
Laser output is improved to improve.Also, radiating efficiency is improved with complementing each other with the raising of the thermal capacitance of collector plate 32,34, thus
The welding energy for being applied to collector plate 32,34 and positive pole portion 12 or negative pole portion 14 can be absorbed, it is possible to increase welding precision is simultaneously
Improve the reliability of connection.
Additionally, the thermal capacitance increase that the convex portion 122 of collector plate 32,34 causes can suppress due to true in collector plate 32,34
Melting heat change during the welding protected various sinking paths and cause, can realize the stabilisation of welded condition, energy
Enough improve welding precision.
[the 9th implementation method]
9th implementation method discloses the welding of collector plate and terminal.
On the 9th implementation method, positive pole current collections plate 132 and positive terminal 130（Or negative electrode collector plate 136 and negative pole
Terminal 134）Welding, reference picture 29.Figure 29 enlargedly show the welding portion of positive pole current collections plate 132 and positive terminal 130.
On positive pole current collections plate 132, for example, forging processing is carried out to aluminium sheet, its connection face 152 is relative to positive pole current collections
The upper surface of plate 132 or lower surface constitute inclined plane.Used as one, connection face 152 is facing to up time relative to vertical
The inclined inclined plane in pin direction, the edge of the side of contact surface 165 turns into flexure plane.In addition, on positive terminal 130, being such as also
Forging processing is carried out to aluminium sheet, its terminals side joint face 164 constitutes inclined plane towards positive pole current collections plate 132, used as one
Terminals side joint face 164 is to face inclined inclined plane counterclockwise relative to vertical, the edge of the side of contact surface 165 with just
Pole collector plate 132 similarly turns into flexure plane.Therefore, positive terminal 130 and positive pole current collections plate 132 have in the side of contact surface 165
Part snugly into each other and the non-contact portion 167 for opening deviously in the vertical direction each other.Such positive pole current collections plate
132 with the form of positive terminal 130 in negative electrode collector plate 136 as being also in the relation of negative terminal 114.
By laser beam 169（Figure 30）Irradiation center（Irradiation position 171,173）It is set in and such positive pole collection
The contact position of the side of electroplax 132 and positive terminal 130（Contact surface 165）At different positions.Irradiation position 171 be from
Position in figure above the deflection of contact surface 165, irradiation position 173 is the position below the deflection of contact surface 165 from figure.These shine
It is the positions different from contact surface 165 to penetrate position 171,173, as long as contact surface 165 can be included in by the shape of laser beam 169
Into nugget 138（Figure 31）Scope（Weld part）Interior position.
Welding form on the laser beam 169, reference picture 30.Shown in the A of the welding form just like Figure 30 of laser beam 169
Heat conduction weld and the perforation as shown in the B of Figure 30（keyhole）Welding.Intermetallic welding can use any welding shape
State, but in perforation（keyhole）In welding, as shown in the B of Figure 30, due to being to irradiate the sharp focus 175 of laser beam 169
To solder side, therefore sharp and huge nugget 138 can be produced, the growth with nugget 138 correspondingly, sometimes forms multiple flying
Splash thing 177.
On the other hand, in heat conduction weld, as shown in the A of Figure 30, it is set to the irradiation position that focus 175 is in laser beam 169
The front for putting 171,173 defocuses mode, and the big irradiation portion 179 of bore is formed at the irradiation position 171,173.In the irradiation portion
In 179, compared with sharp focus 175, heat transfer is lentamente produced, form slow nugget 138.That is, in heat conduction weld
In, generate the nugget 138 extended on the radial direction of irradiation portion 179.In the soldering, dissipated by making laser beam 169
Jiao, thus expands nugget size, piercing welding is transferred to heat conduction weld.
In addition, on already described irradiation position 171,173 and welding energy, irradiation position 171,173 represents laser beam 169
Center.Additionally, the nugget size of the range of exposures of laser beam 169 and nugget 138（Figure 31）It is identical.Therefore, if changed
Become the center（That is, irradiation position is not non-contact portion 167, but irradiation position is turned into tabular surface）, then need not
The welding energy of the center as the ceiling capacity of laser beam 169 is reduced in weld part office, energy can be efficiently provided
Amount, is obtained in that desired nugget depth（Welding scope）.
On the nugget 138 formed by such heat conduction weld, reference picture 31.In the A of Figure 31, by laser beam
169 irradiation center is set at irradiation position 171 and is irradiated, and its illumination mode is that to expand nugget by defocusing straight
Footpath, in the B of Figure 31, the irradiation center of laser beam 169 is set at irradiation position 173 to be irradiated, its irradiation
Form is to expand nugget size by defocusing.That is, in the A of Figure 31, nugget center O is set as more to be leaned on than contact surface 165
Top in figure, in the B of Figure 31, nugget center O is set as than contact surface 165 more by lower section in figure.
In such heat conduction weld, although irradiation position 171 or irradiation position 173 are from the deflection of contact surface 165
Side or lower section, but contain in the nugget 138 for expanding nugget size into contact surface 165, so as to by positive pole current collections plate 132 with
Positive terminal 130 is welded.In the Figure 31, Ф is nugget size, and Nd is nugget depth, and Wd is the depth of weld.Because nugget is straight
Footpath Ф is big, and nugget 138 compared with piercing welding closer to flat, therefore obtain the welding depth equal with nugget depth Nd
Degree Wd（≒Nd）.That is, which thereby enhance welding precision and weld strength.In addition, by by nugget depth Nd with welding
The difference in size of depth Wd is set as within 0.5 [mm], is obtained in that desired weld strength.
In addition, in the outer surface portion of nugget 138, before welding the side of contact surface 165 part snugly into each other with exist each other
The non-contact portion 167 opened deviously on above-below direction is melted and is integrally formed, and thus generates gentle face 181.
Nugget 138 is in the contact surface 165 or negative electrode collector plate 136 with positive pole current collections plate 132 and positive terminal 130
The direction parallel with the contact surface 165 of negative terminal 134（Along connection face 152 and terminals side joint face 164, in parallel side
To）On, it is continuous or be discontinuously formed.
In addition, in this embodiment, although the irradiation position 171,173 of laser beam 169 or electron beam with contact
It is different from contact surface 165 on the vertical direction in face 165, but can also on the direction intersected with contact surface 165 with contact surface
165 is different.
According to the 9th implementation method, following effect can be obtained.
（1）In the above-described embodiment, laser beam 169 has been used, but it is also possible to replace laser beam using electron beam
169.In this embodiment, by laser beam 169 or electron beam irradiation to positive pole current collections plate 132 or negative electrode collector plate
136 and the different position of contact surface 165 of positive terminal 130 or negative terminal 134, therefore, it is possible to collector plate and outside terminal
The state of the contact surface between part independently welds both.
（2）Laser beam 169 can select positive terminal 130（Or negative terminal 134）The irradiation position 171 of side, positive pole collection
Electroplax 132（Or negative electrode collector plate 136）Any one position in the irradiation position 173 of side, it is also possible to select any one
Tabular surface irradiates laser beam 169 or electron beam.In the illumination mode of such laser beam 169 or electron beam, just
Pole collector plate 132（Or negative electrode collector plate 136）With positive terminal 130（Or negative terminal 134）Contact surface 165 processing
Precision is low, and in the case of for example having gap, is obtained in that optimal welding scope, it is possible to increase collector plate and external terminal portions
Welding precision, weld strength between part.
（3）Positive pole current collections plate 132（Or negative electrode collector plate 136）, positive terminal 130（Or negative terminal 134）In make
With hardness such as aluminium than relatively low metal material, in the case where being processed by forging processing etc., machining accuracy is limited.Nothing
Method avoids positive pole current collections plate 132（Or negative electrode collector plate 136）With positive terminal 130（Or negative terminal 134）Between connect
The gap produced between contacting surface.In this case, by cause already described laser beam 169, electron beam irradiation position 171,
173 is different from contact surface 165, it is possible to increase welding precision.
（4）As long as so that the irradiation position 171,173 of laser beam 169 or electron beam is in the side intersected with contact surface 165
It is different from contact surface 165 upwards, but its size and its scope are for example preferably ± 0.1~± 0.5 [mm].By setting
It is the scope, contact surface 165 can be included in the welding scope of laser beam 169 or electron beam.
As long as the depth of the nugget 138 of laser welding or electron beam welding can realize welding, for example, it is preferably
1.2 [mm] are below.If set to the scope, then enable to the range of exposures of laser beam 169 or electron beam appropriate, nothing
The thickness of collector plate and outside terminal part need to be increased, the maximization of electrical storage device can be avoided.
[the 10th implementation method]
10th implementation method discloses the welding of collector plate and terminal.
On the 10th implementation method, positive pole current collections plate 132 and positive terminal 130（Or negative electrode collector plate 136 and negative pole
Terminal 134）Welding, reference picture 32.Figure 32 enlargedly show the weld part of positive pole current collections plate 132 and positive terminal 130.
On positive pole current collections plate 132, for example, forging processing is carried out to aluminium sheet, as one, formed at connection facial 152
There is the cap 153 that section is triangle as covering part.Positive terminal 130 is also same, for example, carry out forging processing to aluminium sheet,
Form taper surface 163.If so that the angle of the taper surface 163 is consistent with the angle of inclination of the interior sidewall surface of cap 153,
Both are enabled to match.In this case, gap etc. can be produced according to machining accuracy at contact surface 165.That is,
Possess in the side of contact surface 165 part snugly into each other and the non-contact portion 167 for opening deviously in the vertical direction each other.
The form of such positive pole current collections plate 132 and positive terminal 130 is in the relation of negative electrode collector plate 136 and negative terminal 114
It is the same.
By the irradiation center of laser beam 169（Irradiation position 171）It is set in and such positive pole current collections plate 132 and just
At the consistent position of extreme sub 130 contact surface 165.Irradiation position 171 can it is consistent with contact surface in figure 165, or
The position different from contact surface 165.
The welding form of the laser beam 169 is identical with situation about being illustrated in the 9th implementation method, therefore the description thereof will be omitted.
On the nugget 138 formed by heat conduction weld, reference picture 33.In fig. 33, irradiated at irradiation position 171
Laser beam 169, its illumination mode is to amplify nugget size Ф by defocusing.I.e., in fig. 33, although be set as nugget center
O is consistent with contact surface 165, but it is also possible to be set in the either above or below in figure（On the direction intersected with contact surface 165 with
Contact surface 165 is different）.
In such heat conduction weld, because irradiation position 171 is consistent with contact surface 165, therefore, in nugget size Ф
Contain in exaggerated nugget 138 into contact surface 165, so as to positive pole current collections plate 132 be welded with positive terminal 130.Due to molten
Nuclear diameter Ф is big, and nugget 138 compared with piercing welding closer to flat, therefore obtain the weldering equal with nugget depth Nd
Meet depth Wd（≒Nd）.That is, which thereby enhance welding precision and weld strength.
Additionally, in the outer surface portion of nugget 138, with the cap 153 of the side of contact surface 165 before welding（Figure 32）It is snugly into each other
Part and the non-contact portion 167 that opens deviously in the vertical direction each other melt and be integrally formed, thus generate gentle
Face 181.
In addition, as shown in the A of Figure 34, can be in cap 153（Figure 32）Or it is provided with the positive pole current collections plate of cap 153
132 or negative electrode collector plate 136 lateral limit in so that the irradiation position 171 of laser beam 169 is more closer to the top than contact surface 165
And it is different, or as shown in the B of Figure 34, it is more on the lower and more different than contact surface 165.In this case, put in nugget size
Also contain in big nugget 138 into contact surface 165, so as to be welded with positive terminal 130 to positive pole collector plate 132.At this
In Figure 34, Ф is nugget size, and Nd is nugget depth, and Wd is the depth of weld.Because nugget size Ф is big, and nugget 138 with wear
Eyelet welding is connect compared to closer to flat, therefore obtains the depth of weld Wd equal with nugget depth Nd（≒Nd）.That is, by
This improves welding precision and weld strength.In addition, being set as with the difference in size of depth of weld Wd by by nugget depth Nd
Within 0.5 [mm], desired weld strength is obtained in that.
Nugget 138 is in the contact surface 165 or negative electrode collector plate 136 with positive pole current collections plate 132 and positive terminal 130
The direction parallel with the contact surface 165 of negative terminal 134（Along connection face 152 and terminals side joint face 164, in parallel side
To）On, it is continuous or be discontinuously formed.
According to the 10th implementation method, can obtain and the 9th implementation method identical effect.
As described above, most preferred implementation method of the invention etc. is illustrated, but the present invention is not limited
In above-mentioned record, those skilled in the art are it is of course possible to the record according to claims or in the mode that carries out an invention
Invention disclosed main points carry out various modifications and change, and such deformation and change are obviously also contained in the scope of the present invention.
Industrial applicability
Electrical storage device of the invention and its manufacture method contribute to simplification of terminal connecting structure and connection operation etc., can
Productivity ratio and reliability are improved, is beneficial.
Label declaration
2：Battery；4：Cell device；8：Encapsulating housing；10：Element end face；12：Positive pole portion；14：Negative pole portion；16：Insulation
Interval；18：Hush panel；28、130：Positive terminal；30、134：Negative terminal；32：The collector plate of side of the positive electrode；34：Negative side
Collector plate；36：Insulation gap；38：Welded connection；40：Element central；44：Notch；46：Recess；48：Terminal connection part；
50：Element connecting portion；52：1st welding face；54：2nd welding face；120：The collector of side of the positive electrode；140：The collection of negative side
Electric body；56、58：Separator；60：Fold line；62：Separator bar；12A、12B、12C：Division；14A、14B、14C：Division；
64：Laser irradiation device；66：Laser irradiates；68：Laser irradiating part position；72、74：Connecting plate；76：Coupling recess portion；78：Welding
Face；80：Protrusion face；84：Recess；86：Convex portion；90：Base material；92：Polarizability electrode；94：Otch；96：End difference；98：
Chuck mechanism；112：Welding face；114：Element covering part；116：Recess；118：Laser emitting portion；119：Illuminated laser spot；
122：Convex portion；132：Positive pole current collections plate；136：Negative electrode collector plate；138：Nugget；153：Cap；163：Taper surface；164：Terminal
Side joint face；165：Contact surface；169：Laser beam；171、173：Irradiation position；177：Splash.
Claims (17)
1. a kind of electrical storage device, it is characterised in that the electrical storage device possesses：
Charge storage element, it makes the electrode body of the electrode body of side of the positive electrode and negative side relative across separator, the electricity of the negative side
Electrode layer that polar body is made up of any materials in the carbon material and titanium oxide that can reversibly adsorb, release lithium ion and
Collector is constituted；
Sealing part, the housing parts sealing that it will contain the charge storage element；
The electrode projection of side of the positive electrode and the electrode projection of negative side, they are the electrode body is protruded from the electric power storage unit
The identity element end face of part and formed；
The collector plate of the side of the positive electrode of semicircle shape, it is connected with the electrode projection of the side of the positive electrode；
The collector plate of the negative side of semicircle shape, it is connected with the electrode projection of the negative side；And
Terminal component, it is arranged at the sealing part, is connected with the collector plate,
The 1st insulation gap is set between the electrode projection of the side of the positive electrode and the electrode projection of the negative side,
The straight line portion of the collector plate of the side of the positive electrode is relative with the straight line portion of the collector plate of the negative side, in the positive pole
The 2nd insulation gap is set between the collector plate of the collector plate of side and the negative side,
The side surface part of the side surface part of the terminal component and the collector plate constitutes common face, and the terminal component is in side
Between be welded to connect with the collector plate.
2. electrical storage device according to claim 1, it is characterised in that
The collector plate of the collector plate of the side of the positive electrode and the negative side is carried out swashing using laser beam with the terminal component
Photocoagulation or the electron beam welding using electron beam.
3. electrical storage device according to claim 1, it is characterised in that
The electrode projection of the electrode projection of the side of the positive electrode and the negative side by fold line is set and in the element
Bent on end face.
4. electrical storage device according to claim 1, it is characterised in that
The terminal component is included：
Outside terminal, it is connected with the collector plate of the side of the positive electrode and the collector plate of the negative side；And
Connecting plate, it is arranged between the outside terminal and the collector plate of the side of the positive electrode and the collector plate of the negative side.
5. electrical storage device according to claim 1, it is characterised in that
The collector plate of the collector plate of the side of the positive electrode and the negative side have the join domain that is connected with the terminal component with
And the join domain that the electrode projection and the electrode projection of the negative side with the side of the positive electrode are connected, these join domains
It is set at different positions.
6. electrical storage device according to claim 1, it is characterised in that
The collector plate and the terminal component of the collector plate of the side of the positive electrode and the negative side possess and are set as with the storage
The connection face of the arc surface on the basis of the element central of electric device.
7. electrical storage device according to claim 1, it is characterised in that
The collector plate of the collector plate of the side of the positive electrode and the negative side has heavy section, and the side of the positive electrode is made using the heavy section
Collector plate and the thermal capacitance that has of collector plate of the negative side increase.
8. electrical storage device according to claim 2, it is characterised in that
Collector plate and the negative side of the weld part based on the laser beam or the electron beam relative to the side of the positive electrode
Collector plate staggers with the contact surface of the terminal component.
9. electrical storage device according to claim 1, it is characterised in that
By the covering part for being formed on the collector plate of the side of the positive electrode and the collector plate of the negative side or the terminal component
The contact surface of the collector plate of the side of the positive electrode and the collector plate of the negative side and the terminal component is covered, in the covering part
In possess the irradiation by laser beam or electron beam to the collector plate of the side of the positive electrode and the collector plate of the negative side and institute
State the weld part that terminal component is welded.
10. electrical storage device according to claim 2, it is characterised in that
The irradiation position of the laser beam or the electron beam and the collector plate of the side of the positive electrode and the collector plate of the negative side
Contact surface with the terminal component is consistent, or different with the contact surface from the direction that the contact surface intersects.
11. electrical storage devices according to claim 2, it is characterised in that
The nugget depth of the laser welding or the electron beam welding is below 1.2mm.
12. a kind of manufacture methods of electrical storage device, it is characterised in that the manufacture method of the electrical storage device includes following operation：
The electrode layer that formation is made up of any materials in the carbon material and titanium oxide that can reversibly adsorb, release lithium ion
And the electrode body of the negative side of collector composition, and form the electrode body and the negative pole possessed across the side of the positive electrode of separator
The charge storage element of the electrode body of side；
The electrode of the side of the positive electrode that formation makes the electrode body protrude from the identity element end face of the charge storage element and formed is protruded
Portion and the electrode projection of negative side；
The electrode projection of the side of the positive electrode is connected across the collector plate of the side of the positive electrode of semicircle shape and be arranged at sealing part
Terminal component, the sealing part will house the housing parts sealing of the charge storage element；
The electrode projection of the negative side is connected across the collector plate of the negative side of semicircle shape and be arranged at sealing part
Terminal component, the sealing part will house the housing parts sealing of the charge storage element；
The 1st insulation gap is set between the electrode projection of the side of the positive electrode and the electrode projection of the negative side；And
The straight line portion of the collector plate of the side of the positive electrode is relative with the straight line portion of the collector plate of the negative side, in the positive pole
The 2nd insulation gap is set between the collector plate of the collector plate of side and the negative side,
In the operation of the connection, the side surface part of the side surface part of the terminal component and the collector plate constitutes common face
Portion, the terminal component is welded to connect between side with the collector plate.
The manufacture method of 13. electrical storage devices according to claim 12, it is characterised in that wrapped in the operation of the connection
Containing following operation：
Connected by welding between side the electrode projection of the side of the positive electrode and the electrode projection of the negative side and
The collector plate of the collector plate of the side of the positive electrode and the negative side；And
The collector plate of the side of the positive electrode and the collector plate of the negative side and institute are connected by laser welding or electron beam welding
State terminal component.
The manufacture method of 14. electrical storage devices according to claim 12, it is characterised in that
Following operation is included in the operation of the connection：The collector plate of the fixation side of the positive electrode and the current collection of the negative side
Plate, and be pressed into the state of the collector plate of the collector plate of the side of the positive electrode and the negative side by the charge storage element,
The electrode for connecting the collector plate of the side of the positive electrode and the collector plate of the negative side and the side of the positive electrode is fetched by Laser Welding
The electrode projection of protuberance and the negative side.
The manufacture method of 15. electrical storage devices according to claim 12, it is characterised in that
The manufacture method of the electrical storage device includes following operation：In the collector plate and the current collection of the negative side of the side of the positive electrode
The upper surface setting sealing wire of plate, carries out laser irradiation, collector plate and the negative pole to the side of the positive electrode at the sealing wire
The electrode projection of the side of the positive electrode of the collector plate of side and the charge storage element and the electrode projection of the negative side enter
Row welding.
The manufacture method of 16. electrical storage devices according to claim 12, it is characterised in that
The manufacture method of the electrical storage device includes following operation：Change be irradiated to be set in the side of the positive electrode collector plate and
Laser output on the sealing wire of the collector plate of the negative side.
The manufacture method of 17. electrical storage devices according to claim 13, it is characterised in that
The irradiation position of laser beam or electron beam is set in the collector plate of the collector plate and the negative side with the side of the positive electrode
The position different from the contact surface of the terminal component, laser beam or electron beam are irradiated to the irradiation position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011143558 | 2011-06-28 | ||
| JP2011-143558 | 2011-06-28 | ||
| PCT/JP2012/004198 WO2013001821A1 (en) | 2011-06-28 | 2012-06-28 | Electricity storage device and method for manufacturing electricity storage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103620824A CN103620824A (en) | 2014-03-05 |
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| JP6264431B2 (en) | 2018-01-24 |
| KR101943675B1 (en) | 2019-01-29 |
| EP2728647A4 (en) | 2015-03-04 |
| CN103620824A (en) | 2014-03-05 |
| WO2013001821A1 (en) | 2013-01-03 |
| US10777802B2 (en) | 2020-09-15 |
| EP2728647B1 (en) | 2018-10-10 |
| EP2728647A1 (en) | 2014-05-07 |
| JP6070552B2 (en) | 2017-02-01 |
| JPWO2013001821A1 (en) | 2015-02-23 |
| KR20140047091A (en) | 2014-04-21 |
| JP2017063044A (en) | 2017-03-30 |
| US20140113185A1 (en) | 2014-04-24 |
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